Improvements:

• Use sys info function instead of connection db name #4623

Typings:

• Deferrable and withkeyName should not be in ColumnBuilder #4600
• Add TypeScript support for deferrable, new Primary/Unique syntax #4589

New features:

• Oracle: support specifying schema for dropTable and dropSequence #4596
• Oracle: support specifying schema for autoincrement #4594